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DS/EN IEC 61280-4-1:2019/AC:2020

Fibre-optic communication subsystem test procedures - Part 4-1: Installed cabling plant - Multimode attenuation measurement

This document is applicable to the measurement of attenuation of installed optical fibre cabling*289 plant using multimode optical fibre. This cable plant can include multimode optical fibres,*290 connectors, adapters, splices, and other passive devices. The cabling may be installed in a*291 variety of environments including residential, commercial, industrial, and data centre premises,*292 as well as outside plant environments. The test equipment used in this standard has a single fibre*293 connector interface to test one fibre at a time; or sometimes a duplex interface that may be used to test a*294 pair of fibres, often testing one fibre of the pair in each direction.*295 In this standard, the optical fibres that are addressed include sub-categories A1-OMx, where x =*296 2, 3, 4 and 5 (50/125 m) and A1-OM1 (62,5/125 m) multimode optical fibres, as specified in*297 IEC 60793-2-10. The attenuation measurements of the other multimode categories can be made*298 using the approaches of this standard, but the source conditions for the other categories have*299 not been defined.

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